Demo chars and bank account
It’s not just like you never put anything into the bank, you didn’t put anything into it. Think of your DEMO characters as existing in an entirely separate universe, separate storage, separate characters, separate wallet.
What happens in DEMO stays in DEMO and vice versa (unless there’s a bug).
Your new storage tab was added to LIVE after you created the DEMO universe; it won’t show up there.
John Smith: “you should kill monsters, because killing monsters is awesome.”
When you create your first demo character, the game automatically creates a demo bank that contains a copy of everything that was in your real bank at that exact moment. From that point onwards, nothing you do on your demo bank will affect your live one, or vice versa. Demo characters and banks are deleted after the demo weekend ends.